*{
    margin: 0px;
    padding: 0px;
}
body{
    background-image: url("image/login_bg.jpg");
}

#head{
    height: 60px;
    margin-top: 20px;
    margin-left: 10px;
}
#center{
    margin-left: auto;
    width: 1000px;
    margin-top: 85px auto;
}
form div{
    height: 80px;
    margin-top: 20px;
    font-size: 30px;
}
form input{
    height: 40px;
    width: 300px;
    font-size: 30px;
    padding: 0px 10px;
}
#center form img{
    width: 35px;
}
form div span{
    display: inline-block;
    width: 35%;
    text-align: right;
}
#center form img{
    position: relative;
    right: 45px;
    top: 5px;
    width: 35px;
}
#btn input{
    width: 120px;
    border: hidden;
    border-radius: 10px;
    position: relative;
    left: 350px;
}
#btn a input{
    position: relative;
    left: 450px;
}